<template>
  <div>
    <h1>当前求和为:{{sum}}</h1>
    <h3>当前放大十倍后:{{bigSum}}</h3>
    <h3>我在{{school}},学习{{subject}}</h3>
    <h3>Person组件的总人数是:{{personList.length}}</h3>
    <select v-model.number="n">
      <option value="1">1</option>
      <option value="2">2</option>
      <option value="3">3</option>
    </select>
    <button @click="increment(n)">+</button>
    <button @click="decrement(n)">-</button>
    <button @click="decrementOdd(n)">当前求和为奇数再加</button>
    <button @click="decrementWait(n)">等一等再加</button>
  </div>
</template>

<script>
import { mapState, mapGetters, mapMutations, mapActions } from 'vuex'
export default {
  name: 'Count',
  data () {
    return {
      n: 1,//用户选择的数字
    }
  },
  methods: {
    //借助mapMutations生成对应的方法,方法中会调用commit去联系mutations(对象写法)
    ...mapMutations('countAbout', { increment: 'JIA', decrement: 'JIAN' }),
    //借助mapActions生成对应的方法,方法中会调用dispatch去联系Actions(对象写法)
    ...mapActions('countAbout', { decrementOdd: 'jiaOdd', decrementWait: 'jiaWait' })
  },
  computed: {
    //借助mapState生成计算属性,从state中读取数据(数组写法)
    ...mapState('countAbout', ['sum', 'school', 'subject']),
    ...mapState('personAbout', ['personList']),
    //借助mapGetters生成计算属性,从getters中读取数据(数组写法)
    ...mapGetters('countAbout', ['bigSum'])
  },
  mounted () {

  },
}
</script>

<style scoped>
button {
  margin-left: 5px;
}
</style>